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daemon/htlc: including routing information.

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This is the logical place for it to belong: with the HTLC.  For the manually-created
HTLCs, we create a simple one-hop route.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2016-06-30 09:08:10 +09:30
parent 4902907628
commit bf3acfab62
5 changed files with 61 additions and 15 deletions
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27
daemon/peer.c
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@@ -10,11 +10,13 @@
#include "lightningd.h"
#include "log.h"
#include "names.h"
#include "onion.h"
#include "payment.h"
#include "peer.h"
#include "permute_tx.h"
#include "protobuf_convert.h"
#include "pseudorand.h"
#include "routing.h"
#include "secrets.h"
#include "state.h"
#include "timeout.h"
@@ -554,7 +556,8 @@ static bool command_htlc_fulfill(struct peer *peer,
static bool command_htlc_add(struct peer *peer, u64 msatoshis,
unsigned int expiry,
const struct sha256 *rhash)
const struct sha256 *rhash,
const u8 *route)
{
struct channel_state *cstate;
struct abs_locktime locktime;
@@ -600,7 +603,9 @@ static bool command_htlc_add(struct peer *peer, u64 msatoshis,
*/
cstate = copy_funding(peer, peer->remote.staging_cstate);
if (!funding_add_htlc(cstate, msatoshis,
&locktime, rhash, peer->htlc_id_counter, OURS)) {
&locktime, rhash, peer->htlc_id_counter,
route, tal_count(route),
OURS)) {
log_unusual(peer->log, "add_htlc: fail: Cannot afford %"PRIu64
" milli-satoshis in their commit tx",
msatoshis);
@@ -610,7 +615,9 @@ static bool command_htlc_add(struct peer *peer, u64 msatoshis,
cstate = copy_funding(peer, peer->local.staging_cstate);
if (!funding_add_htlc(cstate, msatoshis,
&locktime, rhash, peer->htlc_id_counter, OURS)) {
&locktime, rhash, peer->htlc_id_counter,
route, tal_count(route),
OURS)) {
log_unusual(peer->log, "add_htlc: fail: Cannot afford %"PRIu64
" milli-satoshis in our commit tx",
msatoshis);
@@ -619,7 +626,7 @@ static bool command_htlc_add(struct peer *peer, u64 msatoshis,
tal_free(cstate);
queue_pkt_htlc_add(peer, peer->htlc_id_counter,
msatoshis, rhash, expiry);
msatoshis, rhash, expiry, route);
/* Make sure we never offer the same one twice. */
peer->htlc_id_counter++;
@@ -2491,6 +2498,15 @@ const struct json_command getpeers_command = {
"Returns a 'peers' array"
};
/* A zero-fee single route to this peer. */
static const u8 *dummy_single_route(const tal_t *ctx,
const struct peer *peer,
u64 msatoshis)
{
struct node_connection **path = tal_arr(ctx, struct node_connection *, 0);
return onion_create(ctx, path, msatoshis, 0);
}
static void json_newhtlc(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
@@ -2543,7 +2559,8 @@ static void json_newhtlc(struct command *cmd,
return;
}
if (!command_htlc_add(peer, msatoshis, expiry, &rhash)) {
if (!command_htlc_add(peer, msatoshis, expiry, &rhash,
dummy_single_route(cmd, peer, msatoshis))) {
command_fail(cmd, "could not add htlc");
return;
}